Tricky account is hard to keep in line (8)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

TICK is the kind of account you want, add IS in plain sight and H(ard), the whole keeping in L(ine). In the days when we used to use cash and didn’t always have it, your friendly corner shop or even pub would allow you to put your purchases on tick, a list behind the counter, against the day you won the pools.